Virus:TR/Drop.Small.aqx
Date discovered:19/07/2006
Type:Trojan
Subtype:Dropper
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:78.848 Bytes
MD5 checksum:f787be1f778feb2870e4b03aa83e6eed
VDF version:6.35.00.184
IVDF version:6.35.00.224

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Mcafee: PWS-LDPinch
   •  Kaspersky: Trojan-Dropper.Win32.Small.aqx
   •  F-Secure: Trojan-Dropper.Win32.Small.aqx
   •  Eset: Win32/TrojanDropper.Microjoin.C


Platforms / OS:
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Drops malicious files
   • Registry modification

 Files The following files are created:

– %TEMPDIR%\Xinch.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/PSW.LdPinch.UJ.3

– %TEMPDIR%\kgb_KS.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Drop.Microjo.I.2

– %SYSDIR%\SVKP.sys

 Registry The following registry keys are added in order to load the services after reboot:

– [HKLM\SYSTEM\CurrentControlSet\Services\SVKP]
   • "Type"=dword:00000001
   • "Start"=dword:00000002
   • "ErrorControl"=dword:00000001
   • "ImagePath"=\??\%SYSDIR%\SVKP.sys
   • "DisplayName"="SVKP"

– [HKLM\SYSTEM\CurrentControlSet\Services\SVKP\Security]
   • "Security"=%hex values%

– [HKLM\SYSTEM\CurrentControlSet\Services\SVKP\Enum]
   • "0"="Root\\LEGACY_SVKP\\0000"
   • "Count"=dword:00000001
   • "NextInstance"=dword:00000001

 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • SVKP

Description inserted by Adriana Popa on Monday, September 11, 2006
Description updated by Adriana Popa on Monday, September 11, 2006

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